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Home >> Porsche >> 2011 >> Cayenne S >> Repair and Diagnosis >> Suspension >> Wheel Alignment >> 44 - Wheels, Tyres, Suspension Alignment (4.8L Non Turbo) -- 92A - Cayenne (92A) >> WM, 443455 Replacing TPM Control Unit >> Coding Control Unit

Coding Control Unit

NOTE: Voltage drop 
  • Risk of irreparable damage to control unit 
  • Risk of damage to control unit 
  • Fault entries in the control unit 
  • Coding in the control unit is aborted 
  • Malfunctions in control unit, even during programming 
    1. Prior to disconnecting the control unit, switch off ignition and remove ignition key.
    2. Ensure that the power supply is not interrupted during programming.
    3. Connect a battery charger with a current rating of at least 90 A to the vehicle battery.

Information 

The PIWIS Tester  instructions take precedence since the description may be different with later Tester releases.

The procedure described here has been structured in general terms. Different text or additional information may appear on the PIWIS Tester  .

  1. Switch off ignition and replace control unit.

    > 443419 REMOVING AND INSTALLING CONTROL UNIT FOR TYRE PRESSURE MONITORING (TPM)  .

  2. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on ignition.
  3. Select the vehicle type and start the diagnostic application.
  4. Select the required control unit, e.g. Tire Pressure Monitoring system  in the overview  .
  5. Codings/adaptations  must now be selected.
  6. Automatic coding  must now be selected. Then press F12 to continue.
  7. The Tester displays the message Coding has been completed successfully  . Press F12 to continue.
  8. Read out the fault memory  and erase it if necessary.
  9. Return to the overview  of control units.
  10. Check the function of the Tire Pressure Monitoring (TPM) system during the test drive.
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